Locomotive



A. W. BRUCE Dec. 15, 1931.

5 Sheets-Sheet INVENTOR H/frea Bruce 0. 'ATT NEY I! rllllllllllllllllllllllllllll ll i & i mm 3 CE CE mm N 0 Dec. 15, 1931.

A. w. :BRUCE LOCOMOTIVE Filed Oct. 20, 1930 3 Sheets-Sheet 2 INVENTOR BYfly/ed W. Bruce ORNEY A. W. BRU CE Dec 15, 1931.

LOCOMOTIVE Filed Oct. 20, 1950 5 Sheets-Sheet O 0 O O O O 0 O INVENTORBY fl/fr/ N Bruce Patented Dec. 15, 1931 umren PATENT ALFRED W- BU E OEW YORK N- LocoMo'rrvE Application filed Octoheri20, 193.0. Serial No.489,827.

With such use a maximum efficiency ande onomy may be ac ved y e ec npositive circulation through the pipes and drums in transverse planes,This arrangement affords the shortest possible length for a completewater circuit, atithe same time obviating interference inthe difierentwater circuits.

In my prior co-pending application Seerial Number 385,654 filed August13, 1929 for improvements in high pressure locomotives, I haveexemplified vhigh pressure steam generator in which circulation pipes,

and drums are so arranged in the fire box and combustion chamber toeffect the aforesaid transverse circulation throughout the length of thesame.

An object of the present invention .is to provide a locomotive which isdesigned :for the use of high pressure steam in which the advantages oftransversecirculation may be realized in the forward barrel portion ofthe same as well as inthe fire box and combust-ion chamber. (while atthe same time retaining a boiler design suitable foruse on locomotivesfollowing the present day practice.

A furtherobjectof the invention is to provide a locomotive with theaforesaid characteristics embodying a construction which will have theadvantage vof simplicity and ruggedness while at the same time beingadaptable for any desired wheel arrangement. A r

A further object of the invention isto provide a structure such as theaforesaid which lllemp y nimi m i e t-c m nd Wa e drums SQ ang a o a f amaximum steam space while at the same time being able to collect steamfrom chambers where there is no direct ebullition.

A further obj ectof the inventionis to provide a locomotive of theaforedescribed type in which the forward section may be formedintegrally with or separately from the fire,

box section, as may be desired, and said sections will be so positionedthat the same water level will be maintained in both, thus permitting asingle water feed attachment f r t s me- Inlthe accompanying drawings,Fig. l is a sideelevation of a locomotive with the boiler and fireboxjackets removedshowing this invention applied thereto; Fig. 2 is a planview of the same Fig. 3 is a sectional View taken on the line III+III ofFig. 1; Fightis a sectional view taken on the line IV-fIV of Fig. 1;Fig. ,5 is a diagrammatic view showing, on the left hand side, thecircul tion through the fire boxvand,von the right hand side, thecirculation through the barrel portion; F 16 is a back view on anenlarged .scaleofthe structure illustrated in Fig. 1; and Fig. 7 is anisometric view on an enlarged scale of the, central header and parts ofcerta n o i atte da me ts- I thep n ti fth n ti n, referring,descriptivcely to the specific embodiment thereof which has beenselected for exemplification herein,

the locomotive comprises a forward fire tube section 10 and a rear fireboxsection 11. It will be understood that throughout the specificationand claims' where, the words the box or fire box section are used, thesame are intended, unless other-. wise specified, to include the firebox section alone ofthose locomotives which do not include a, combustionchamber section, and to include both the fir'e box and the combustionchamber sections .of thoselocomotives which have a combustion cl lam berbetween the tire box and the fire tube section.

The firebox section vcomprises two bottom water drums, 12, the rear halfof a central up per steam drum 13, which extends the length of both thefire box section and the fire tube section and the rear half of twoouter upper steam drums, 14, which likewise extend the length of boththe fire box section and fire tube section one disposed on each side ofthe steam drum and parallel therewith. Within the fire box, upfiowcirculation pipes 15, connect the bottom drums 12 with the central upperdrum 13 and downflow circulation pipes 16, connect the outer upper drums14 with the bottom drums 12; the combustion chamber 17 being within theupflow pipes. A rear header 18 (Fig. 6) is provided at the end of thedrums, and a fuel door 19 is formed there-' in. The header is connectedwith the lower drums 12 and the upper central drum 13. Cross pipes 20connect the outer steam drums 14 with the central drum 13. The upflowpipes 15, each have a lower substantially vertical portion at the sideof the fire box and an upper diagonal portion which'overlies the top ofthe fire box. These upfiow pipes are arranged in rows or banks and sospaced and staggered with relation to each other as to afford thegreatest possible exposed surface and to cause the gases of combustionto travel around them in a tortuous path, thus obtaining a maximumthermal efficiency from the gases.

The forward part or fire tube section of the generator, comprises a maincylindrical barrel 21 of relatively large diameter, having fire tubes 22arranged within the same passing longitudinally therethrough. Theforward half of the upper central steam drum 13, which drum, ashereinbefore stated, extends the length of both the fire box section andfire tube section, passes above the barrel 21, parallel therewith and isconnected to the same by vertical passageways 23. Likewise the forwardhalf of the outer upper drums 14, which drums, as aforesaid, extend thelength of both the fire box section and fire tube section, are disposedabove the barrel one on each side of the central drum, and paralleltherewith as aforesaid and are connected to the central drum 13 byhorizontal passageways 24. A longitudinal drum 25 is located centrallybelow the barrel 21, parallel with the same. Downfiow pipes 26, areconnected to the bottom of the upper outer drums 14, and have uppersubstantially vertical portions which extend downwardly along the sidesof the barrel, and lower diagonal portions which pass under the barrel,their lower ends being connected with the drum 25. Vertical passageways27 connect the lower drum 25 with the barrel 21.

A central header 28 (Fig. 7 is disposed between the forward section 10and the tire box section 11. The central upper drum 13 passes throughthe header which serves to 7 hold it in its proper relative position.

It will of course, be notedthatthe central drums as well as the outerupper drums 14 may be either single continuous integral members asdescribed or may comprise two separate drums suitably connectedtogether. The header 28 is of such shape that the outer upper drums 14pass on the outside of the 5 a rear tube sheet for the barrel 21, andthe 4 upper central drum 13, and the lower fire box drums 12 areprovided with openings in their sides within the header, (as shown inFigs. 3 and 7), so that the header establishes communication between thebarrel, the upper central drum and the lower fire box drums. The waterpasses from the forward section to the fire box section through therearmost downfiow pipes 26 which are connected to the lower water drums12. The boiler feed is introduced into the lower central drum 25 of theforward section by a pipe 29 connected thereto.

A superheater 30 of any preferred or usual design is provided asindicated in Fig. 1 and in the usual way it is connected'at the front ofthe forward section 10 to a header 31, and has reaches 32 extendingintothe fire tubes 22.

The operation of the improved locomotive is as follows: Feed waterenters the lower central drum 25 from the pipe 29 and passing throughthe upward passageways 27 circulates upwardly around the fire tubes 22when heated thereby, continuing upwardly through the passageways 23 intothe central upper drum 13 it passes outwardy through the passageways 24to the outer upper drums 14 and then downwardly through the verticalpipes 26 back to the lower central drum 25, thus completing thetransverse circulation through the forward section of the generator. Asthe water passes from the front of the forward section back to the rearof the same the sediment therein is precipitated in a decreasing amountfrom front to back, so that only a very small amount will reach the firebox section. Passing from the downflow tubes, 26 the water enters thelower drums 12 of the fire box section. Here a similar transversecirculation is effected, the water passing upward through the tubes 15to the upper central drum 13 through the passageways 20 into the outerdrums 14, and then downwardly through the outer tubes 16 back into thelower drums 12. It will thus be noted that the water circulatespositively in transverse planes throughout the entire length of both thefire box section and the forward bar- .rel portion of the locomotive. Asthe most violent ebullition in both sections, occurs in the centralupper drum 13 the steam is withdrawn from the outer upper drums 14 whereand connecting means between a receiving member for the downfiow unitsof the fire box section and a downfiow unit of the fire tube section.

10. A locomotive steam generator comprising a rear fire box section, anda forward fire tube section, both of said sections comprising a downfiowand upflow unit arranged to effect the circulation of water therethroughtransversely of said fire tubes in a vertical direction, a receivingmember for the upflow units of both sections comprising a singlecontinuous passage longitudinally across both of said sections connectedwith said upflow units, receiving members for the downflow units of eachof said sections connected with said downfiow units, and connectingmeans between a downfiow receiving member of the fire box section and adownfiow unit of the fire tube section.

11. A locomotive steam generator comprising a rear water tube fire boxsection, and a forward fire tube section, both of said sectionshaving adownfiow unit and an upflow unit for the circulation of watertherethrough in transverse planes, and a header disposed between saidsections connecting the same and establishing communicationtherebetween.

12. A locomotive steam generator comprising a rear water tube fire boxsection, and a forward fire tube section, both of said sec tions havinga downfiow unit andan upflow unit, a receiving member for the upfiowunits of both sections connected thereto, and separate receiving membersfor the downfiow units of each of said sections respectively connectedthereto, arranged to effect the circulation of water therethrough intransverse planes, the receiving member for the upflow units of both ofsaid sections comprising a' single continuous member extending thelength of both of said sections, and a header disposed between saidsections and providing connecting means for said sections andestablishing communication therebetween.

13. A steam generator for a locomotive comprising a rear fire boxsection, and a forward fire tube section, both of said sections havingupflow and downfiow units, receiving members for the upflow units ofsaid sections,

and receiving members for the downfiow units of said sections, the saidreceiving members for the upflow units of both sections being disposedwith relation to each other so as to effect a common water level.

14. In a locomotive, a steam generator comprising a barrel member havingfire tubes passing therethrough, a drum disposed above said barrelmember, a water drum disposed below said barrel member. a row ofdownflow tubes effecting communication between the upper drum and thelower drum, and connecting passages between the barrel member and theupper and lower water drums, to

effect the circulation of water through said generator in oppositedirections in substantially vertical transverse planes, the said barrelmember constituting the upflow passage of said circulation.

15. A steam generator for locomotives comprising a barrel member havingfire tubes section comprising a barrel member having fire tubes passingtherethrough, a bottom water drum disposed below said barrel member,means connecting said bottom water drum to said barrel member andestablishing communication therebetween, a central upper steam drumdisposed above said barrel member, means connecting said central uppersteam drum with said barrel member and establishing communicationtherebetween, an outer upper steam drum arranged parallel with saidcentral drum, a passage establishing communication between the outersteam drum and the central steam drum, downflow pipes connecting thebottom drum with the outer upper steam drum, the said central uppersteam drum extending to and communicating directly with the said firebox section, and means disposed between the two sections for effectingcommunication between downfiow pipes of the forward section and the saidfire box section.

- 17. In a locomotive, a steam generator comprising a rear fire boxsection comprising a lower water drum, an upper steam drum, a 'row ofupfiow pipes leading to the upper .drum, the said upper steam drums ofboth sections being connected to form one continuous passageway, andmeans disposed between ample surfaces for steaming and a maximum volumefor storage. The steam is carried in the usual manner through the drypipes-33'to the super-heater header 31 and so on through thesuper-heater.

It will be noted that in the arrangement aforedeseribe-d the fire boxand barrel sections are adapted to be installed or removed from thelocomotives as one complete unit or if desired may be constructed in twoseparate sections. The invention thus provides a high pressurelocomotive which is both simple and rugged in constructiomthat iseconomical to manufacture and maintain, and which affords a highlyefiicient apparatus in that a material saving in fuel and water may beeffected by the use of the same.

While there has been hereinbefore described and illustrated one of thepreferred forms of construction of the invention it will be apparentthat many and various changes and modifications in procedure, form,arrangement, and construction of same may be resorted to and, that theinvention is not 'limited, therefore, to this particular embodimentdisclosed, but includes all such changes and modifications as comewithin the spirit and scope of the same as defined in the appendedclaims.

The invention claimed and desired to be securedby Letters Patent is:

1. In a locomotive, a steam generator comprising a barrel having firetubes passing longitudinally therethrough, and means disposed outside ofsaid barrel and connected thereto to effect the circulation of waterthrough said barrel transversely of said fire tubes in a verticaldirect-ion.

2. In a locomotive, a steam generator comprising a barrel having firetubes passing longitudinally therethrough, and a plurality of watertubes associated therewith to effect the circulation of the waterthrough said bar- :reltransversely of said fire tubes in a verticaldirection.

3. In a locomotive, a steam generator com- .prisinga water tube fire boXsect-ion, and a forward fire tube section, said fire tube sectioncomprising a barrel having fire tubes zpassing longitudinallytherethrough and a plurality of water tubes outside of said barrel andconnected thereto, arranged to effect the circulation of water throughthe forward section transversely of said fire tubes in a .verticaldirection.

4. A locomotive steam generator comprising a water tube fire boxsection, and a forward fire tube section, said fire box sectioncomprising means for circulating water therethrough in oppositedirections in substantially vertical transverse planes, and said firetube section comprising a barrel having a plurality of fire tubespassing'longitudinally therethrough and means disposed outside of said'barrel and connected thereto to effect the circulation of water throughsaid section in opposite directions in substantially vertical transverseplanes.

5. In a locomotive, a steam generator comprising a barrel having fire:tubes passing .therethrough, an upper steam drum above effecting thecirculation of water through .SZIId'gBHEFELl/OI mopposite directions 1nsubstantially vertical transverse planes.

6. In a locomotive, a steam generator comprising a plurality of cylindermembers p0- sitioned in at least-three different horizontal planes,-acylinderiof the middle plane having fire tubes passing horizontallytherethrough, connecting passageways between the fire tube cylinder andcylinders of the other planes, and a plurality of substantially verticaltubes connecting said upper and lower cylinders, to effect thecirculation of water through said generator transversely of said firetube cylinder in a vertical direction, said fire tube cylinderconstituting an upflow passage and said tubes constituting downfiowpassages.

7. In a locomotive, a steam generator'comprising a rear fire boxsection,and a forward fire tube section,;said fire tube sectioncomprising a plurality of'cylindenmembers p0- sitioned in at least threedifferent horizontal planes, a cylinder ofthe middle plane having aplurality of fire tubes passing longitudinally therethrough, connectingpassageways between the fire tube cylinder and the cylinders of theother planes, and a plurality of substantially vertical water tubesindependently connectingtheupper and lower cy1= inders arranged toeffect the circulation of water ='th:rough said fire tube cylinder andwater tubes in opposite direct-ions in substantially vertical planestransversely of said fire tubes.

8. Alocomotive steam generator comprisin-ga rear water tube fire boxsection, and a forward fire tube section, bothof said sect-ions havingdownfiow and upflow units arranged to effect the circulation of watertherethrou-gh transversely of said fire tubes in a vertical directionand a receiver for their upflow units comprising a single continuousmemberextending the length of both sec- :tions.

9. A locomotive steam generator comprising a rear fire box section,and aforward fire tube section, both of said sections comprising downflow andupfiow units arranged to effect the circulation of water theret-hroughtransversely of-said fire tubes in a'vertical direction :a receivingmember for'the downfiow units of the rear SGCtlOD, connected thereto,

:a-receiv-ing inember for the downfiow units :of the forward section,connected thereto,

gen

the two sections for effecting communication between the said downflowtubes of the forward section and the said lower drum of the fire boxsection, whereby water will be circulated through both of said sectionsin transverse planes.

18. In a locomotive, a steam generator comprising a forward fire tubesectlon, and a rear fire box section, a longitudinally and centrallydisposed upper steam drum extending the length of both of said sections,a longitudinally disposed upper steam drum at the outside of saidcentrally disposed steam drum extending the length of both of saidsections, means connecting said outer drum and said central drum, lowerwater drums for both of said sections, downflow and upflow pipes for thesaid fire box section between the said upper and lower drums connectingthe same, downflow pipes between the outer upper and the lower drums ofsaid fire tube section, a barrel member containing fire tubes disposedbetween said upper and lower drums of said fire tube section, meansconnecting said barrel member with said central upper drum and saidlower drum of the forward section, said barrel member constituting anupfiow passage for said forward section, and a header disposed betweenthe two sections, the said upper central steam drum passing therethroughand the said lower water drums of the fire box section and the barrelmember of the fire tube section being connected to said header, and atleast one of the downflow pipes of the forward section being incommunication with a lower water drum of the fire box section, wherebywater will be circulated through both of the said sections insubstantially vertical transverse planes.

ALFRED W. BRUCE.

